Gardner Bender 19-1H1 Tan Hexlock-Wire Connector, 6-Pack

Multi-range copper to copper connections only. Allows automatic or manual installation without stress whitening or distortion. Use 5/16" socket for H1. Square wire spring grabs and holds wires for secure connections. Long skirt covers stripped wires. Rated at 600 volt maximum and at 1000 volt maximum in lighting fixtures, luminaries and signs.